Paths Flapping Between "Active" and "Failed" when Using iSCSI on RHEL/Rocky/AlmaLinux

Audience
Public
Content Type
Source Type
Knowledge Base

Paths Flapping Between "Active" and "Failed" when Using iSCSI on RHEL/Rocky/AlmaLinux

KB0023066
Environment

iSCSI on RHEL/Rocky/AlmaLinux

Symptoms
  • Paths constantly switching between active and failed
  • High I/O latency during transitions
Resolution

Diagnostic Steps:

# Check connection state
iscsiadm -m session -P 3

# Monitor path state changes
watch -n 1 'multipathd show paths'
  1. Check cable connections
  2. Review switch port statistics for errors
  3. Adjust timeout parameters